package com.redteam.servlets;

import com.redteam.data.beans.Reservation;
import com.redteam.models.DAOAccessor;
import com.redteam.util.DateChecker;
import java.io.IOException;
import java.sql.Date;
import java.sql.Time;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * After the instructor is chosen, this class works with datetimechoice.jsp to get a start date from the user.
 * @author Franco Morales
 */
@WebServlet(name = "DateTimeChecker", urlPatterns = {"/DateTimeChecker"})
public class DateTimeChecker extends HttpServlet {

    /**
     * Default empty constructor
     */
    public DateTimeChecker() {
    }

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session = request.getSession();

        ServletContext context = getServletContext();
        RequestDispatcher dispatch = context.getRequestDispatcher("/jsp/datetimechoice.jsp");

        Reservation res = (Reservation) session.getAttribute("reservation");

        Time time = new Time(Long.parseLong(request.getParameter("time")));
        Date date = new Date(Long.parseLong(request.getParameter("date")));

        DAOAccessor accessor = new DAOAccessor();
        List<Reservation> conflicting = accessor.getCustomerPilotItemSchedules(res);
        for (Reservation r : conflicting) {
            if (!DateChecker.checkForConflict(res.getStartDate(), res.getStartTime(), res.getEndDate(), res.getEndTime(), r.getStartDate(), r.getStartTime(), r.getEndDate(), r.getEndTime())) {
                dispatch = context.getRequestDispatcher("/jsp/reservationconfirmation.jsp");
            }
        }
        String alert = "The times were conflicting.";
        request.setAttribute("alert", alert);
        dispatch.forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
